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  • 1
    Electronic Resource
    Electronic Resource
    Poor intergrain connectivity of PbMo6S8 in sintered Mo-sheathed wires and the beneficial effect of hot-isostatic-pressing treatments on the transport critical current density (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 70 (1991), S. 1606-1613 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The microstructure of Mo-sheathed Chevrel-phase superconducting wires was investigated by high-resolution scanning electron microscopy (SEM). Excess Pb forms small nodules (10–30 nm) on the Chevrel-phase grains or wetting layers between the Chevrel grains. The critical current density Jc is strongly reduced when wetting layers are present. However, second-phase Mo exists as islands as large as 2–10 μm and has little harmful effect on Jc. Although some Mo-sheathed wires sintered at 700 °C show relatively high Jc ( ≥ 2 × 108 A/m2 at 8 T), the Chevrel phase in these wires has a very porous microstructure, and the Jc values measured with a magnetic field parallel to the current, Jc((parallel)), were only about 10% higher than the Jc values measured with a field perpendicular to the current, Jc(⊥). This clearly suggests that the transport current flows percolatively in these wires. Much denser microstructures were obtained by hot-isostatic-pressing (HIP) treatments at 1200 °C, and very high Jc values, (approximately-greater-than) 5 × 108 A/m2 at 8 T and 9.3 × 107 A/m2 at 23 T, which are of the order of the highest Jc values so far reported, were observed. High-resolution SEM observations of HIP'ed wires demonstrate that the interconnectivity between the Chevrel grains was much improved.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.349525
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  • 2
    Electronic Resource
    Electronic Resource
    Chemical equilibrium in simple fluids: Solvent density dependence of the dimerization equilibrium of 2-methyl-2-nitrosopropane in argon and xenon (1992)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 96 (1992), S. 3824-3829 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: We have studied the dimerization equilibrium of 2-methyl-2-nitrosopropane (MNP) at 60 and 35 °C in argon and xenon up to densities about twice the critical density of the solvent. With an increase in the solvent density, the dimerization equilibrium constant at 60 °C decreases in the low-density region, whereas it increases in the high-density region. The inversion of the density dependence occurs around ρr(approximately-equal-to)0.8 in argon and ∼1.4 in xenon, where ρr means the density reduced by the critical density of the solvent fluid. The equilibrium constant in xenon at 35 °C increases with increasing solvent density in the low-density region (ρr〈∼0.5), while it decreases in the medium-density region (0.5〈ρr〈1.5). The equilibrium constant in argon at 35 °C has a similar density dependence to that at 60 °C. The internal energy change for the dimerization shows a large density dependence in the low-density region of xenon, while it changes little with density in argon. The theoretical calculation by the Percus–Yevick (PY) approximation for a simple reaction model gives a poor result for the density dependence of the equilibrium constant, although the temperature dependence of the equilibrium constant is reproduced qualitatively. The calculation for a more realistic model including the molecular anisotropy of MNP suggests that the density dependence at the low-density limit is sensitive to the interaction model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.461887
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  • 3
    Electronic Resource
    Electronic Resource
    Chemical equilibrium in fluids from the gaseous to liquid states: Solvent density dependence of the dimerization equilibrium of 2-methyl-2-nitrosopropane in carbon dioxide, chlorotrifluoromethane, and trifluoromethane (1992)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 96 (1992), S. 3085-3091 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: We have studied the dimerization equilibrium of 2-methyl-2-nitrosopropane in carbon dioxide (CO2), chlorotrifluoromethane (CClF3), and trifluoromethane (CHF3) at 60 °C from the gaseous to liquid states. The dimerization equilibrium constants are not monotone functions of the solvent density in all solvent fluids. The density dependence of the equilibrium constant shows two inversions: The equilibrium constants in CO2 and CHF3 increase with increasing solvent density up to ρr(approximately-equal-to)0.3, where ρr is the reduced density by the critical density of solvent, whereas the equilibrium constant in CClF3 shows little dependence on the solvent density in this density region. From ρr(approximately-equal-to)0.3 to about 1.4, the equilibrium constants decrease with increasing solvent density. In the higher-density region, the equilibrium constants increase again. We measured the equilibrium constants in CClF3 and CHF3 at 35 °C, and obtain the density dependence of the equilibrium constant which is almost the same as that at 60 °C. The effects of the temperature and the solvent species on the equilibrium constant are larger in the low-density region than in the high-density region. The differences between the low- and high-density regions suggest that the energetic factor is dominant in the low-density region, and that the packing effect is dominant in the high-density region. The experimental results are qualitatively reproduced by a simple reaction model where two spherical molecules dimerize in a fluid composed of spherical molecules, although the reaction model overestimates the equilibrium constant.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.461953
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  • 4
    Electronic Resource
    Electronic Resource
    Ultrafast transient-absorption spectroscopy of the aqueous solvated electron (1993)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 98 (1993), S. 5996-5998 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: We have performed the first direct pump-probe transient-absorption measurements on the near-infrared (IR) band of the equilibrated aqueous solvated electron. The pump pulse was centered at 780 nm. The absorption spectrum of the excited state is observed to be red-shifted relative to the ground-state absorption. The radiationless transition from the excited state to the ground state occurs with an average time constant of 550±170 fs. In observing a subpicosecond lifetime and red-shifted absorption for the excited p-states, these experiments are in accord with a growing body of experimental and theoretical work, serving to provide a consistent picture of the photophysics of the solvated electron.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.464839
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  • 5
    Electronic Resource
    Electronic Resource
    Preparation of PrBa2Cu3Oy and PrBa2Cu3Oy/YBa2Cu3Oy epitaxial films using molecular beam epitaxy (1991)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 58 (1991), S. 298-300 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Using molecular beam epitaxy, we have successfully prepared PrBa2Cu3Oy (PBCO) films and PBCO/YBa2Cu3Oy (YBCO) layered structures. Epitaxial growth of these films was confirmed by in situ reflection high-energy electron diffraction. The temperature dependence of resistivity in the PBCO film showed semiconducting behavior. The lattice parameters of Pr1+xBa2−xCu3Oy films decreased when x increased and almost coincided with that of well-oxidized YBa2Cu3Oy films (y∼7) when x∼0.3. These experimental results indicate that YBCO/PBCO/YBCO multilayers are suitable for artificial layered structures of oxide superconductors, i.e., electronic devices.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.104667
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  • 6
    Electronic Resource
    Electronic Resource
    Ultrafast Transient Absorption Spectroscopy of the Solvated Electron in Water (1994)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 98 (1994), S. 3450-3458 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100064a029
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  • 7
    Electronic Resource
    Electronic Resource
    Enhancement of surface acidity and catalytic activity by glass formation of calcium metaphosphate (1991)
    Springer
    Catalysis letters 11 (1991), S. 49-53 
    Details
    ISSN: 1572-879X
    Keywords: Calcium metaphosphate glass ; surface acidity ; catalytic activity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Effective acid sites for the dehydration of 2-propanol and isomerization of 1-butene were found to be generated by glass formation of calcium metaphosphate. The number of these sites with strong acidity remarkably decreased by the crystallization of the glass, where the condensation of hydroxyl groups were significant. Thus, the sites must be the monohydrogen phosphate protons.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00866900
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  • 8
    Electronic Resource
    Electronic Resource
    Factor B subtyping in sera and bloodstains by isoelectric focusing and immunoblotting (1990)
    Springer
    International journal of legal medicine 103 (1990), S. 345-349 
    Details
    ISSN: 1437-1596
    Keywords: Polymorphism, serum groups ; Serum groups, BF ; Isoelectric focusing and immunoblotting, BF subtypes ; Bloodstains, BF subtyping ; Polymorphismus, Serumgruppen ; Serumgruppen, BF Isoelektrofokussierung and Immunoblotting, BF ; Subtypen ; Blutspuren, BF-Subtypisierung
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Law
    Description / Table of Contents: Zusammenfassung Mittels isoelektrischer Fokussierung und Immunoblotting wurden die BF-Subtypen bei 765 nicht verwandten japanischen Individuen untersucht. Neben fünf häufigen Phänotypen wurden drei seltene Varianten beobachtet. Die Allelfrequenzen betrugen: BF*S = 0,8078, BF*FA = 0,1797, BF*FB = 0,0105, BF*Var. = 0,0020. Diese Methode wurde mit Erfolg zur BF-Subtypisierung an gelagerten Blutspuren angewandt. Die zeitlichen Nachweisgrenzen betrugen: bei 4°C 8 Wochen, bei Zimmertemperatur 2 Wochen and bei 37°C nur 2 Tage nach Lagerung. Die BF-Subtypisierung ist zur rechtsmedizinischen Individualisierung von unbekannten Blutspuren von praktischem Nutzen.
    Notes: Summary The polymorphism of BF was investigated in 765 unrelated Japanese individuals by isoelectric focusing and immunoblotting. Besides five common subtypes three rare variants were observed. The allele frequencies were: BF*S = 0.8078, BF*FA = 0.1797, BF*FB = 0.0105, BF*Var. = 0.0020. The above method was successfully applied to subtyping BF in stored blood-stains. The determination limits were: at 4°C 8 weeks, at room temperature 2 weeks and at 37°C only 2 days after storage. The BF subtyping is of practical use in medicolegal individualization of unknown bloodstains.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00204455
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  • 9
    Electronic Resource
    Electronic Resource
    The Temperature and the Grains of Ti-6Al-4V Alloy on the Uniaxial and Biaxial Deformations for Superplasticity (1994)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 170-172 (Oct. 1994), p. 207-212 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/00/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.170-172.207.pdf
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  • 10
    Electronic Resource
    Electronic Resource
    Factor B subtyping in sera and bloodstains by isoelectric focusing and immunoblotting (1990)
    Springer
    International journal of legal medicine 103 (1990), S. 345-349 
    Details
    ISSN: 1437-1596
    Keywords: Polymorphism, serum groups ; Serum groups, BF ; Isoelectric focusing and immunoblotting, BF subtypes ; Bloodstains, BF subtyping ; Polymorphismus, Serumgruppen ; Serumgruppen, BF ; Isoelektrofokussierung und Immunoblotting, BF-Subtypen ; Blutspuren, BF-Subtypisierung
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Law
    Description / Table of Contents: Zusammenfassung Mittels isoelektrischer Fokussierung und Immunoblotting wurden die BF-Subtypen bei 765 nicht verwandten japanischen Individuen untersucht. Neben fünf häufigen Phänotypen wurden drei seltene Varianten beobachtet. Die Allelfrequenzen betrugen: BF*S=0,8078, BF*FA = 0,1797, BF*FB=0,0105, BF*Var.=0,0020. Diese Methode wurde mit Erfolg zur BF-Subtypisierung an gelagerten Blutspuren angewandt. Die zeitlichen Nachweisgrenzen betrugen: bei 4°C 8 Wochen, bei Zimmertemperatur 2 Wochen und bei 37°C nur 2 Tage nach Lagerung. Die BF-Subtypisierung ist zur rechtsmedizinischen Individualisierung von unbekannten Blutspuren von praktischem Nutzen.
    Notes: Summary The polymorphism of BF was investigated in 765 unrelated Japanese individuals by isoelectric focusing and immunoblotting. Besides five common subtypes three rare variants were observed. The allele frequencies were: BF*S=0.8078, BF*FA=0.1797, BF*FB=0.0105, BF*Var.=0.0020. The above method was successfully applied to subtyping BF in stored blood-stains. The determination limits were: at 4°C 8 weeks, at room temperature 2 weeks and at 37°C only 2 days after storage. The BF subtyping is of practical use in medicolegal individualization of unknown bloodstains.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01263039
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